Installation manual

Construction
Layout of boiler
Operating principle
4
Layout of boiler
The R600 boiler consists of the follow-
ing main components:
1 Casing
2 Front panel
3 Adjustable feet
4 Control panel (below cover)
5 Flue gas connection
6 Air intake connection
7 Gas connection
8 Flow water connection
9 Return water connection
10 2nd (hot) return water connection
(for split system use)
11 Filling/draining valve
12 Electrical input connections
13 Frame
14 Burner/1st heat exchanger
assembly
15 2nd/3rd heat exchanger assembly
16 Water headers
17 Condensate receptacle
18 Whirlwind gas/air mixing system
19 Fan
20 Gas valve
21 Water flow switch
22 Gas pressure switch
23 Inspection opening
24 Ignition and ionisation electrodes
25 Syphon
26 Removable flue gas adapter
Operating principle
The R600 is a fully modulating boiler.
The control unit of the boiler adapts the
modulation ratio automatically to the
heat demand requested by the system.
This is done by controlling the speed of
the fan. As a result, the Whirlwind mix-
ing system will adapt the gas ratio to
the chosen fan speed, in order to main-
tain the best possible combustion fig-
ures and therewith the best efficiency.
The flue gases created by the combus-
tion are transported downwards
through the boiler and leave at the back
side into the chimney connection.
The KM628 control unit can control the
boiler operation based on:
• fixed temperature (stand alone opera-
tion);
• weather compensated operation (with
optional controller);
• with 0-10V external influence
(temperature or capacity) from a
building management system.
The return water from the system en-
ters the boiler in the lower section,
where is the lowest flue gas tempera-
ture in the boiler. In this section con-
densation takes place. The water is
being transported upwards through the
boiler, in order to leave the boiler at the
top (burner) section. The cross flow
working principle (water up, flue gas
down) ensures the most efficient com-
bustion results.
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